Comparison of sampling methods for semi-volatile organic carbonAssociated with PM2.5
This study evaluates the influence of denuder sampling methods and filter collection media on the measurement of semi-volatile organic carbon (SVOC) associated with PM2.5. Two types of collection media, charcoal (activated carbon) and XAD, were used both in diffusion denuders and impregnated back-up filters in two different samplers, the VAPS and the PC-BOSS. The two organic diffusion denuders were XAD-coated glass annular denuders and charcoal-impregnated cellulose fiber filter(CIF) denuders. In addition, recently developed XAD-impregnated quartz filters were compared to CIF filters as back-up filter collection media. The two denuder types resulted in equivalent measurement of particulate organic carbon and particle mass. The major difference observed between the XAD and charcoal BOSS denuders is the higher efficiency of charcoal for collection of more volatile carbon. This more volatile carbon does not contribute substantially to the particle mass or SVOC measured as OC on quartz filters downstream of the denuders. This volatile carbon does result in high OC concentrations observed in charcoal filters placed behind quartz filters downstream of the XAD denuders and would result in overestimating the SVOC in that configuration.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE; US Environmental Protection Agency Grants 825367010and IAG #DW89938164-01-0
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 877607
- Report Number(s):
- LBNL-46199; ASTYDQ; R&D Project: 80KE01; TRN: US200608%%509
- Journal Information:
- Aerosol Science and Technology, Vol. 34, Issue 1; Related Information: Journal Publication Date: 2001; ISSN 0278-6826
- Country of Publication:
- United States
- Language:
- English
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